diff --git a/bridges/relays/bin-substrate/src/chains/millau.rs b/bridges/relays/bin-substrate/src/chains/millau.rs
index aa56d113e14ed..f318274750df9 100644
--- a/bridges/relays/bin-substrate/src/chains/millau.rs
+++ b/bridges/relays/bin-substrate/src/chains/millau.rs
@@ -54,6 +54,4 @@ impl CliEncodeMessage for Millau {
 
 impl CliChain for Millau {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = Some(millau_runtime::VERSION);
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
diff --git a/bridges/relays/bin-substrate/src/chains/rialto.rs b/bridges/relays/bin-substrate/src/chains/rialto.rs
index a8e8143632e16..8a473dc303c4c 100644
--- a/bridges/relays/bin-substrate/src/chains/rialto.rs
+++ b/bridges/relays/bin-substrate/src/chains/rialto.rs
@@ -46,6 +46,4 @@ impl CliEncodeMessage for Rialto {
 
 impl CliChain for Rialto {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = Some(rialto_runtime::VERSION);
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
diff --git a/bridges/relays/bin-substrate/src/chains/rialto_parachain.rs b/bridges/relays/bin-substrate/src/chains/rialto_parachain.rs
index 66d03f212ce76..7105dc2b7d7c8 100644
--- a/bridges/relays/bin-substrate/src/chains/rialto_parachain.rs
+++ b/bridges/relays/bin-substrate/src/chains/rialto_parachain.rs
@@ -48,6 +48,4 @@ impl CliEncodeMessage for RialtoParachain {
 
 impl CliChain for RialtoParachain {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = Some(rialto_parachain_runtime::VERSION);
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
diff --git a/bridges/relays/bin-substrate/src/chains/rococo.rs b/bridges/relays/bin-substrate/src/chains/rococo.rs
index 68a6b3e7b1db7..6805c021a213e 100644
--- a/bridges/relays/bin-substrate/src/chains/rococo.rs
+++ b/bridges/relays/bin-substrate/src/chains/rococo.rs
@@ -23,12 +23,8 @@ use sp_version::RuntimeVersion;
 
 impl CliChain for Rococo {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
 
 impl CliChain for BridgeHubRococo {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
diff --git a/bridges/relays/bin-substrate/src/chains/westend.rs b/bridges/relays/bin-substrate/src/chains/westend.rs
index 075f22b698fdf..50ae034957619 100644
--- a/bridges/relays/bin-substrate/src/chains/westend.rs
+++ b/bridges/relays/bin-substrate/src/chains/westend.rs
@@ -22,12 +22,8 @@ use sp_version::RuntimeVersion;
 
 impl CliChain for Westend {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
 
 impl CliChain for Westmint {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
diff --git a/bridges/relays/bin-substrate/src/chains/wococo.rs b/bridges/relays/bin-substrate/src/chains/wococo.rs
index 2edd3dcf606e9..0bbfa676fe996 100644
--- a/bridges/relays/bin-substrate/src/chains/wococo.rs
+++ b/bridges/relays/bin-substrate/src/chains/wococo.rs
@@ -23,12 +23,8 @@ use sp_version::RuntimeVersion;
 
 impl CliChain for Wococo {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
 
 impl CliChain for BridgeHubWococo {
 	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
-
-	type KeyPair = sp_core::sr25519::Pair;
 }
diff --git a/bridges/relays/bin-substrate/src/cli/bridge.rs b/bridges/relays/bin-substrate/src/cli/bridge.rs
index 0f0c11f39098d..330b498f19c03 100644
--- a/bridges/relays/bin-substrate/src/cli/bridge.rs
+++ b/bridges/relays/bin-substrate/src/cli/bridge.rs
@@ -17,9 +17,7 @@
 use crate::cli::CliChain;
 use pallet_bridge_parachains::{RelayBlockHash, RelayBlockHasher, RelayBlockNumber};
 use parachains_relay::ParachainsPipeline;
-use relay_substrate_client::{
-	AccountKeyPairOf, Chain, ChainWithTransactions, Parachain, RelayChain,
-};
+use relay_substrate_client::{Chain, ChainWithTransactions, Parachain, RelayChain};
 use strum::{EnumString, EnumVariantNames};
 use substrate_relay_helper::{
 	finality::SubstrateFinalitySyncPipeline, messages_lane::SubstrateMessageLane,
@@ -63,7 +61,7 @@ pub trait CliBridgeBase: Sized {
 	/// The source chain.
 	type Source: Chain + CliChain;
 	/// The target chain.
-	type Target: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Self::Target>>;
+	type Target: ChainWithTransactions + CliChain;
 }
 
 /// Bridge representation that can be used from the CLI for relaying headers
diff --git a/bridges/relays/bin-substrate/src/cli/chain_schema.rs b/bridges/relays/bin-substrate/src/cli/chain_schema.rs
index 6fc0fac18b230..3993b74250df6 100644
--- a/bridges/relays/bin-substrate/src/cli/chain_schema.rs
+++ b/bridges/relays/bin-substrate/src/cli/chain_schema.rs
@@ -15,6 +15,7 @@
 
 // along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
 
+use relay_substrate_client::{AccountKeyPairOf, ChainWithTransactions};
 use structopt::StructOpt;
 use strum::{EnumString, EnumVariantNames};
 
@@ -134,16 +135,16 @@ pub trait TransactionParamsProvider {
 	/// Returns `true` if transaction parameters are defined by this provider.
 	fn is_defined(&self) -> bool;
 	/// Returns transaction parameters.
-	fn transaction_params<Chain: CliChain>(
+	fn transaction_params<Chain: ChainWithTransactions>(
 		&self,
-	) -> anyhow::Result<TransactionParams<Chain::KeyPair>>;
+	) -> anyhow::Result<TransactionParams<AccountKeyPairOf<Chain>>>;
 
 	/// Returns transaction parameters, defined by `self` provider or, if they're not defined,
 	/// defined by `other` provider.
-	fn transaction_params_or<Chain: CliChain, T: TransactionParamsProvider>(
+	fn transaction_params_or<Chain: ChainWithTransactions, T: TransactionParamsProvider>(
 		&self,
 		other: &T,
-	) -> anyhow::Result<TransactionParams<Chain::KeyPair>> {
+	) -> anyhow::Result<TransactionParams<AccountKeyPairOf<Chain>>> {
 		if self.is_defined() {
 			self.transaction_params::<Chain>()
 		} else {
@@ -201,7 +202,7 @@ macro_rules! declare_chain_signing_params_cli_schema {
 
 				/// Parse signing params into chain-specific KeyPair.
 				#[allow(dead_code)]
-				pub fn to_keypair<Chain: CliChain>(&self) -> anyhow::Result<Chain::KeyPair> {
+				pub fn to_keypair<Chain: ChainWithTransactions>(&self) -> anyhow::Result<AccountKeyPairOf<Chain>> {
 					let suri = match (self.[<$chain_prefix _signer>].as_ref(), self.[<$chain_prefix _signer_file>].as_ref()) {
 						(Some(suri), _) => suri.to_owned(),
 						(None, Some(suri_file)) => std::fs::read_to_string(suri_file)
@@ -234,7 +235,7 @@ macro_rules! declare_chain_signing_params_cli_schema {
 
 					use sp_core::crypto::Pair;
 
-					Chain::KeyPair::from_string(
+					AccountKeyPairOf::<Chain>::from_string(
 						&suri,
 						suri_password.as_deref()
 					).map_err(|e| anyhow::format_err!("{:?}", e))
@@ -247,7 +248,7 @@ macro_rules! declare_chain_signing_params_cli_schema {
 					self.[<$chain_prefix _signer>].is_some() || self.[<$chain_prefix _signer_file>].is_some()
 				}
 
-				fn transaction_params<Chain: CliChain>(&self) -> anyhow::Result<TransactionParams<Chain::KeyPair>> {
+				fn transaction_params<Chain: ChainWithTransactions>(&self) -> anyhow::Result<TransactionParams<AccountKeyPairOf<Chain>>> {
 					Ok(TransactionParams {
 						mortality: self.transactions_mortality()?,
 						signer: self.to_keypair::<Chain>()?,
diff --git a/bridges/relays/bin-substrate/src/cli/mod.rs b/bridges/relays/bin-substrate/src/cli/mod.rs
index 6784f1a606593..e049a050c4772 100644
--- a/bridges/relays/bin-substrate/src/cli/mod.rs
+++ b/bridges/relays/bin-substrate/src/cli/mod.rs
@@ -194,11 +194,6 @@ pub trait CliChain: relay_substrate_client::Chain {
 	///
 	/// can be `None` if relay is not going to submit transactions to that chain.
 	const RUNTIME_VERSION: Option<sp_version::RuntimeVersion>;
-
-	/// Crypto KeyPair type used to send messages.
-	///
-	/// In case of chains supporting multiple cryptos, pick one used by the CLI.
-	type KeyPair: sp_core::crypto::Pair;
 }
 
 /// Lane id.
diff --git a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/mod.rs b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/mod.rs
index 1a809a1f483c3..fd8a032066d69 100644
--- a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/mod.rs
+++ b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/mod.rs
@@ -227,9 +227,9 @@ trait Full2WayBridgeBase: Sized + Send + Sync {
 	/// The CLI params for the bridge.
 	type Params;
 	/// The left relay chain.
-	type Left: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Self::Left>>;
+	type Left: ChainWithTransactions + CliChain;
 	/// The right destination chain (it can be a relay or a parachain).
-	type Right: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Self::Right>>;
+	type Right: ChainWithTransactions + CliChain;
 
 	/// Reference to common relay parameters.
 	fn common(&self) -> &Full2WayBridgeCommonParams<Self::Left, Self::Right>;
@@ -259,13 +259,9 @@ where
 	type Base: Full2WayBridgeBase<Left = Self::Left, Right = Self::Right>;
 
 	/// The left relay chain.
-	type Left: ChainWithTransactions
-		+ ChainWithBalances
-		+ CliChain<KeyPair = AccountKeyPairOf<Self::Left>>;
+	type Left: ChainWithTransactions + ChainWithBalances + CliChain;
 	/// The right relay chain.
-	type Right: ChainWithTransactions
-		+ ChainWithBalances
-		+ CliChain<KeyPair = AccountKeyPairOf<Self::Right>>;
+	type Right: ChainWithTransactions + ChainWithBalances + CliChain;
 
 	/// Left to Right bridge.
 	type L2R: MessagesCliBridge<Source = Self::Left, Target = Self::Right>;
diff --git a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/parachain_to_parachain.rs b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/parachain_to_parachain.rs
index 3be07404ebe36..b4c858e566b2e 100644
--- a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/parachain_to_parachain.rs
+++ b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/parachain_to_parachain.rs
@@ -116,9 +116,9 @@ macro_rules! declare_parachain_to_parachain_bridge_schema {
 
 			impl [<$left_parachain $right_parachain HeadersAndMessages>] {
 				async fn into_bridge<
-					Left: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Left>> + Parachain,
+					Left: ChainWithTransactions + CliChain + Parachain,
 					LeftRelay: CliChain,
-					Right: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Right>> + Parachain,
+					Right: ChainWithTransactions + CliChain + Parachain,
 					RightRelay: CliChain,
 					L2R: CliBridgeBase<Source = Left, Target = Right>
 						+ MessagesCliBridge
@@ -168,14 +168,8 @@ macro_rules! declare_parachain_to_parachain_bridge_schema {
 
 #[async_trait]
 impl<
-		Left: Chain<Hash = ParaHash>
-			+ ChainWithTransactions
-			+ CliChain<KeyPair = AccountKeyPairOf<Left>>
-			+ Parachain,
-		Right: Chain<Hash = ParaHash>
-			+ ChainWithTransactions
-			+ CliChain<KeyPair = AccountKeyPairOf<Right>>
-			+ Parachain,
+		Left: Chain<Hash = ParaHash> + ChainWithTransactions + CliChain + Parachain,
+		Right: Chain<Hash = ParaHash> + ChainWithTransactions + CliChain + Parachain,
 		LeftRelay: Chain<BlockNumber = RelayBlockNumber, Hash = RelayBlockHash, Hasher = RelayBlockHasher>
 			+ CliChain,
 		RightRelay: Chain<BlockNumber = RelayBlockNumber, Hash = RelayBlockHash, Hasher = RelayBlockHasher>
diff --git a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_parachain.rs b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_parachain.rs
index babd39e558bb1..d632cce08e9c7 100644
--- a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_parachain.rs
+++ b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_parachain.rs
@@ -107,8 +107,8 @@ macro_rules! declare_relay_to_parachain_bridge_schema {
 
 			impl [<$left_chain $right_parachain HeadersAndMessages>] {
 				async fn into_bridge<
-					Left: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Left>>,
-					Right: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Right>> + Parachain,
+					Left: ChainWithTransactions + CliChain,
+					Right: ChainWithTransactions + CliChain + Parachain,
 					RightRelay: CliChain,
 					L2R: CliBridgeBase<Source = Left, Target = Right> + MessagesCliBridge + RelayToRelayHeadersCliBridge,
 					R2L: CliBridgeBase<Source = Right, Target = Left>
@@ -156,11 +156,8 @@ macro_rules! declare_relay_to_parachain_bridge_schema {
 
 #[async_trait]
 impl<
-		Left: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Left>>,
-		Right: Chain<Hash = ParaHash>
-			+ ChainWithTransactions
-			+ CliChain<KeyPair = AccountKeyPairOf<Right>>
-			+ Parachain,
+		Left: ChainWithTransactions + CliChain,
+		Right: Chain<Hash = ParaHash> + ChainWithTransactions + CliChain + Parachain,
 		RightRelay: Chain<BlockNumber = RelayBlockNumber, Hash = RelayBlockHash, Hasher = RelayBlockHasher>
 			+ CliChain,
 		L2R: CliBridgeBase<Source = Left, Target = Right>
diff --git a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_relay.rs b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_relay.rs
index 071716dedb859..fce80492fc071 100644
--- a/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_relay.rs
+++ b/bridges/relays/bin-substrate/src/cli/relay_headers_and_messages/relay_to_relay.rs
@@ -76,8 +76,8 @@ macro_rules! declare_relay_to_relay_bridge_schema {
 
 			impl [<$left_chain $right_chain HeadersAndMessages>] {
 				async fn into_bridge<
-					Left: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Left>>,
-					Right: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Right>>,
+					Left: ChainWithTransactions + CliChain,
+					Right: ChainWithTransactions + CliChain,
 					L2R: CliBridgeBase<Source = Left, Target = Right> + MessagesCliBridge + RelayToRelayHeadersCliBridge,
 					R2L: CliBridgeBase<Source = Right, Target = Left> + MessagesCliBridge + RelayToRelayHeadersCliBridge,
 				>(
@@ -114,8 +114,8 @@ macro_rules! declare_relay_to_relay_bridge_schema {
 
 #[async_trait]
 impl<
-		Left: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Left>>,
-		Right: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Right>>,
+		Left: ChainWithTransactions + CliChain,
+		Right: ChainWithTransactions + CliChain,
 		L2R: CliBridgeBase<Source = Left, Target = Right>
 			+ MessagesCliBridge
 			+ RelayToRelayHeadersCliBridge,
diff --git a/bridges/relays/bin-substrate/src/cli/relay_messages.rs b/bridges/relays/bin-substrate/src/cli/relay_messages.rs
index 7f4dc34ac8bff..6af042670e74d 100644
--- a/bridges/relays/bin-substrate/src/cli/relay_messages.rs
+++ b/bridges/relays/bin-substrate/src/cli/relay_messages.rs
@@ -56,7 +56,7 @@ pub struct RelayMessages {
 #[async_trait]
 trait MessagesRelayer: MessagesCliBridge
 where
-	Self::Source: ChainWithTransactions + CliChain<KeyPair = AccountKeyPairOf<Self::Source>>,
+	Self::Source: ChainWithTransactions + CliChain,
 	AccountIdOf<Self::Source>: From<<AccountKeyPairOf<Self::Source> as Pair>::Public>,
 	AccountIdOf<Self::Target>: From<<AccountKeyPairOf<Self::Target> as Pair>::Public>,
 	BalanceOf<Self::Source>: TryFrom<BalanceOf<Self::Target>>,
diff --git a/bridges/relays/bin-substrate/src/cli/send_message.rs b/bridges/relays/bin-substrate/src/cli/send_message.rs
index 59a36566c0c6e..9f14028c4aee4 100644
--- a/bridges/relays/bin-substrate/src/cli/send_message.rs
+++ b/bridges/relays/bin-substrate/src/cli/send_message.rs
@@ -57,10 +57,7 @@ pub struct SendMessage {
 #[async_trait]
 trait MessageSender: MessagesCliBridge
 where
-	Self::Source: ChainBase<Index = u32>
-		+ ChainWithTransactions
-		+ CliChain<KeyPair = AccountKeyPairOf<Self::Source>>
-		+ CliEncodeMessage,
+	Self::Source: ChainBase<Index = u32> + ChainWithTransactions + CliChain + CliEncodeMessage,
 	<Self::Source as ChainBase>::Balance: Display + From<u64> + Into<u128>,
 	<Self::Source as Chain>::Call: Sync,
 	<Self::Source as ChainWithTransactions>::SignedTransaction: Sync,